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This's a 15$ ebay gremlins 2 famicom pcb converted into a fully functional gimmick! cart with the extra audio due to me being lucky enough to get a cart with a sunsoft 5b chip in it.

The sound circuit which I found on a japanese website:

The eproms are now directly soldered into the pcb and the precision sockets have been removed since everything is working. I built the audio circuit using the wrong parts (1.1k ohm instead of 1k ohm, 10 ufs instead of 1 ufs) which is why the audio circuit is just floating and not built into some nice protoboard while I wait for the right parts to show up in the mail. Probably the most annoying part of this mod was I had to desolder the suinsoft 5b chip using a heatgun to cut a trace underneath which was grounding one of the necessary audio pins. Wiring the prg eprom is annoying too because it's a 32 pin eprom in a 28 pin spot. One of the pins on the prg eprom (a17) needs to be connected to one of the sunsoft 5b pins which was left floating since the previous maskrom didn't use it). Here's the pcb in the current state:

And of course, a video of it in action (before I hard soldered in the eproms)

Why do you STILL go crazy with the glue? Seriously, it looks like garbage and shows you can't make something structurally sound. Should have had all those parts on a piece of prototyping PCB on the outside with maybe blue to keep the PCB from moving. For the electronics, good. Nice. Thanks for doing it. Etc. But to show this off, make it look good, too.

Why do you STILL go crazy with the glue? Seriously, it looks like garbage and shows you can't make something structurally sound. Should have had all those parts on a piece of prototyping PCB on the outside with maybe blue to keep the PCB from moving. For the electronics, good. Nice. Thanks for doing it. Etc. But to show this off, make it look good, too.

It'll be inside a case so you won't have to stare at it. If you don't like it, then go post elsewhere, all you ever do is bitch.

Why do you STILL go crazy with the glue? Seriously, it looks like garbage and shows you can't make something structurally sound. Should have had all those parts on a piece of prototyping PCB on the outside with maybe blue to keep the PCB from moving. For the electronics, good. Nice. Thanks for doing it. Etc. But to show this off, make it look good, too.

F***ing brilliant comment! Try to imagine, how it will looks like with AY chip

I would agree, I hope you can make it look nicer when it's all said and done. It really does look like a WIP with the long wires and glue. But functional certainly counts for alot. Post another picture when you're done. Also, I saw your video and thumbs up for using a real TV to play NES/Famicom and not a crappy Digital TV.

Out of curiosity, why are you using strands of stranded ribbon cable (HDD?) rather than solid 30ga kynar or magnet wire or similar?

I think it's a matter of preference really. I prefer to use the HDD style wires for most of my projects. I used to use solid core wire, but my major issue with it is there is little to no stress relief on the solder joint. If the wire gets pushed or pulled much it'll break free. Although when the whole thing is coated with glue, it's of less concern. BTW, is all the glue for stress relief?

_________________If you're gonna play the Game Boy, you gotta learn to play it right. -Kenny Rogers

God, for the third time now yes this is still a work in progress. I'm waiting on parts to build the proper audio circuit that's why it's like this right now.

proveaux wrote:

Congrats on getting it to work!

Thankyou.

infiniteneslives wrote:

lidnariq wrote:

I think it's a matter of preference really. I prefer to use the HDD style wires for most of my projects. I used to use solid core wire, but my major issue with it is there is little to no stress relief on the solder joint. If the wire gets pushed or pulled much it'll break free. Although when the whole thing is coated with glue, it's of less concern. BTW, is all the glue for stress relief?

Yeah I like a little stress relief on my wires. And yes the glue is for stress relief. It may be a bit excessive but it's not harming anything.

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